TIJUANA, Mexico (The Adobo Chronicles, San Francisco Bureau) – We already know Donald Trump’s campaign promise to build a wall between Mexico and the U.S. southern border.

The Republican presidential candidate promised that the wall will be big, beautiful, tall and strong. Spanning 1,000 miles, he says it will stem the flow of immigrants bringing drugs and crime.

As far as who’s paying to build the wall, Trump says Mexico will.

Naturally, the Mexican government responded by saying there is no way it is going to pay to build the wall.

So, Trump has a brilliant, alternative idea.

In a campaign stop in San Diego today, near the Tijuana border, Trump announced yet another promise — this time to the citizens of Mexico.

“If elected president, I will ask volunteer Mexican citizens to help build the wall.  In return, every volunteer will be awarded with a U.S. green card, the first step towards their American citizenship.”

The Trump campaign office urged interested Mexican citizens to contact the candidate directly through his Twitter account by sending their names and contact information to @realDonaldTrump.

The deadline to sign up is July 30, 2016.